president obama was one of many foreign leaders who made the trip. >> for the people of south africa, for those he inspired around the globe, madiba's passing is rightly a time of mourning and a time to celebrate a heroic life. but i believe it should also prompt in each of us a time for self-reflection. with honesty, regardless of our station or our circumstance, we must ask: how well have i applied his lessons in my own life? >> woodruff: we'll have a full report on the memorial service and talk with charlayne hunter gault, who was there, right after the news summary. in the central african republic, two french soldiers were killed overnight in the capital of bangui. they were on patrol in the city as part of an operation to disarm christian and muslim fighters when gunmen opened fire. it happened hours before french president francois hollande arrived to meet with the interim president, african peacekeepers and religious leaders. a major new federal regulation approved today will bar u.s. banks from trading stocks and other securities for their own profit. the federal reserve and o